baber/WOPTO huggingface dataset:
Patent GB-1391122-A (GB)
Title: Rotary grass cutter or mower
IPC: A01D43/063
Filed: 1972-05-05
Abstract: 1391122 Lawn-mowers HARRY SRI 5 May 1972 [10 May 1971] 21054/72 Heading A1F The discharge outlet 22 of a rotary lawnmower is circumscribed by a member 24, integral with the lawn mower or secured to it, which forms hollow recesses 44 and 46 around the outlet 22. The contour of the open face 32 of an otherwise impervious grass box 30 matches the outer contour of the member 24, and screening means 40 is suspended between the two so as to screen the hollow recesses 44 and 46 but not the outlet 22. The air stream from the discharge outlet 22, carrying grass and mulch, passes into the grass box 30 where it deposits the grass and - then out through the screening means 40 and the hollow recess 44 and 46, which are open downwardly so that the mulch is then deposited on the ground. The screening means 40, which may be of metal, is hooked by means of rods 48 to curved plates 36 of the grass box 30, which are then hingedly saddled on a rod 38 secured on top of the member 24, so that the grassbox 30 may be swung using handle 34 for emptying it, or completely detached for remote emptying, The grass box 30 is widest at its open face 32 and converges therefrom, for ease of emptying. Figure 8 shows an arrangement suitable for a larger, operator carrying type of rotary lawn-mower. The grass box 130 is hinged to the front of the lawn-mower body 110 above the discharge outlet 122, by mating hinge components 136 and 138, and is swung by the movement of a rod 62 mechanically connected to an operating lever on the steering column.
Patent GB-585757-A (GB)
Title: Improvements in or relating to collapsible pit props
IPC: E21D15/12
Filed: 1944-10-28
Abstract: 585,757. Pit-props. PARK GATE IRON & STEEL CO., Ltd., BECKETT, M., and CRAIG, A. B. Oct. 28, 1944, No. 21071. [Class 20 (ii)] A collapsable pit-prop has a sliding head locked in the operative position on the main strut by a locking lever 13 pivoted at 10 to the head and bearing against an abutment 15 formed by the web of the strut, the locking lever being held against the abutment by a catch member 16 pivoted at 17 to the strut. Cheeks 11 are welded to the head and engage the strut by a pin and slot connection 27, 30. The head and strut are of H-section with bearing plates 8, 2 welded to their contacting edges. Slots 9 are cut in the plates 8, 2 to receive the tongues 14 of the locking lever. To release the head, a security pin 22 is withdrawn from the catch 16 and the catch turned in a clockwise direction, by pulling with a prop-puller, to allow the curved surface 32 of the catch to slide over the inclined surface 31 on the lever 13, freeing the lever and allowing the head to slide and rotate to the position shown in Fig. 4. The slots 30 may be shaped so as to prevent tilting of the head, in the operative position, in the plane in which sliding is to take place. In a modification, to prevent such tilting of the head a projection is formed on the lever 13 which engages a hole in the abutment. The catch may be of a turnbuckle type Fig. 8 (not shown).
Patent GB-1177828-A (GB)
Title: Improvements in Differential Output Incandescent Lamp
IPC: H01K1/14
Filed: 1967-05-08
Abstract: 1,177,828. Incandescent filament lamps. GENERAL ELECTRIC CO. 8 May, 1967 [31 May, 1966], No. 21302/67. Heading H1F. An elongated tubular incandescent lamp has an axial filament having a plurality of coiled incandescible sections connected by conducting hot non-incandescible rod-like connectors which short-circuit adjacent leg portions of the filament sections. In the form shown, the lamp 10 consists of a quartz envelope 11 closed at the end by pinch seals 13 through which the lead-in assemblies 14 pass, and filament sections 20 having blocking portions 21 formed by turns of more open pitch which separate the main parts of the filament from leg portions 22 into which are inserted conducting rods 19 which connect these with the leg portions of adjacent filament sections. The rods 19 may be threaded or provided with an overwind wire forming a thread so that they can be screwed into the leg portions. By suitable choice of the lengths and number of the incandescible sections, a desired distribution of light from the filament may be provided. The figure shows arrangements with long end sections 18a and short control sections 18. In another form the middle sections 18 are omitted. Supports 27 may be arranged on the rods and, if desired, also on the incandescible portions.
Patent GB-121745-A (GB)
Title: Improvements relating to Internal Combustion Engines.
Inventor: ANZANI ALESSANDRO
IPC: F02F1/24
Filed: 1918-12-19
Abstract: 121,745. Anzani, A. Dec. 19, 1917, [Convention date]. Cylinders, pipes for and arrangement of ports in.-To prevent unequal expansion of cylinders arranged in a block as shown in Fig. 1, the exhaust outlets E and the inlet passages D alternate with one another on both sides of the engine. In a modified construction, the inlet valves, and also the exhaust valves, are arranged at opposite ends of a diameter of the cylinder.
Patent GB-1152723-A (GB)
Title: Rigid Composite Hollow Molded Articles.
Inventor: ROBERTS ARTHUR HUGH
IPC: B29C39/20
Filed: 1966-05-13
Abstract: 1,152,723. Portable containers. A. H. ROBERTS. 13 May, 1966, No. 21358/66. Heading B8D. [Also in Divisions B5 and F4] A hollow container-like article, such as that illustrated in Fig. 4, comprises an outer skin 20 of plastics or elastomeric material and an inner layer 21 of a rigid material. The outer layer is made in one piece by any suitable moulding method whilst the layer 21 is cast from a liquid material. The inner layer may comprise particles bonded by an elastomeric latex, a foamed resin such as polyurethane, solid resin such as an epoxy or polyester, asphalt, plaster-of-Paris, or cement. The skin and inner layer may be bonded by a suitable adhesive and one or more reinforcing layers of, for example, a polyester or epoxy resin may be located within layer 21 (see Figs. 9 and 14, not shown). In an alternative embodiment, see Fig. 11, the article comprises an outer plastics or elastomeric layer 20, a foamed layer 22 and a chipboard metal or the like reinforcement 29.
Patent GB-781819-A (GB)
Title: Improvements in or relating to ophthalmic mountings
Inventor: ANGELIS ARMAND DE
IPC: G02C5/22
Filed: 1955-07-25
Abstract: 781,819. Hinges and pivots. AMERICAN OPTICAL CO. July 25, 1955. No. 21485/55. Class 65(2) [Also in Group XX] In a temple hinge for a spectacle frame, resilient, compressible, hard-wearing, non- metallic material is compressed against the sides of the aligned apertures of the hinge ears to provide a small amount of friction. The material, which is preferably nylon, is in the form of a tubular bushing 28, 30 or a solid cylinder 61. The internal diameter of the bushing is less than the external diameter of a metallic pivot pin with which it is assembled and the external diameter is substantially the same as the internal diameter of the apertures in the hinge ears. As shown in Fig. 2, the shank portion 26 of screw 22 expands bushing 28 as the screw is driven home and the portion 22a of the screw is subsequently removed. In Fig. 3, metallic cylindrical member 31 is a sliding fit in bushing 30 and is expanded on pushing stud 33 home. The nylon cylinder 61 preferably has a tapered lead-in portion 62 and is slightly larger than the holes provided for it. In one form (Fig. 6, not shown) the bushing is divided longitudinally into three segments corresponding to the three hinge ears.
Patent GB-203325-A (GB)
Title: Improvements in or relating to knitting needles
IPC: D04B35/02
Filed: 1923-08-25
Abstract: 203,325. Durand, E. H. M. E. Aug. 30, 1922, [Convention date]. Needles.-Latch needles are provided each with a recess e at the back into which the hook or head c of an adjacent needle, can be sprung for looptransferring purposes. The Figure shows in dotted lines a needle n in position for receiving a loop from a needle m. The hook ends are offset as shown. According to the Specification as open to inspection under Sect. 91 (3) (a) the invention is applicable to bearded or other needles and the recess e may be formed in the side of the needle. This subject-matter does not appear in the Specification as accepted.
Patent GB-578802-A (GB)
Title: Improvements in the production of oat products
IPC: A23L1/0522
Filed: 1943-12-29
Abstract: A gum-containing fraction of oats for use in the sizing of textiles is obtained by grinding oats, after dehulling, until at least 50 per cent of the ground groats will pass through a 60-mesh screen (0.008 in. diam. wire and 0.0092 in. opening), preferably until 80-90 per cent will pass through a 90-mesh screen (0.005 in. diam. wire and 0.0061 in. opening), and grinding the fraction which will not pass through the screen.  The fraction may be bleached with reducing bleaching agents such as sulphites, or, more effectively, with oxidising bleaching agents such as chlorine or hypochlorites.  The fat present in the fraction may be removed by a solvent such as hexane or petroleum ether.  The gum may be concentrated by extraction of the fraction with water followed by concentration and drying of the aqueous extract and grinding of the residue, or by extraction with an aqueous methyl, ethyl, propyl, isopropyl or butyl alcohol containing not over 40 per cent and desirably 10-25 per cent of alcohol, preferably at pH 4.5-6.9, followed by increasing the alcohol concentration to at least 50 per cent preferably 60 per cent or over, to precipitate the gum from solution, the aqueous extract being bleached with chlorine or hypochlorite solution, if desired.ALSO:In the production of food products such as ice cream, ice cream products, e.g. fruit ripples for ice cream, sherbets, fruit jellies and jams, icings, candies and confections, chocolate milk, mayonnaise and salad dressings, there is used a gum-containing fraction of oats, of protein content more than 20 per cent., obtained by grinding oats, after dehulling, until at least 50 per cent. of the ground groats will pass through a 60-mesh screen (0.008 in diam. wire and 0.0092 in. opening), preferably until 80-90 per cent. will pass through a 90-mesh screen (0.005 in. diam. wire and 0.0061 in. opening), and grinding the fraction which will not pass through the screen, or the product obtained by removal of the fat from such a ground oat fraction by means of a fat solvent or obtained on extracting such a ground groat fraction with water or aqueous alcohol and concentrating, drying and grinding this extract, sucrose, skim milk powder, starch or cereal flour to the extent of 10-50 per cent. of the gum total solids being added, if desired, before or during the drying or subsequent grinding operation.  In the manufacture of ice cream there may be employed between 0.3 and 1 per cent. of the ground oat fraction, which is added to the ice cream mix desirably before the pasteurizing which precedes freezing.  For icings, the ground oat fraction, in amounts of less than 2 per cent., may replace pectin or algin.  In cream cheese manufacture, the ground oat fraction may replace locust bean gum, and in marshmallow syrups 0.5 per cent. of the ground oat fraction may be used in replacement of 10 per cent. or more of corn syrup.
Patent GB-635253-A (GB)
Title: Card index file
IPC: B42F17/02
Filed: 1947-08-08
Abstract: 635,253. Filing cabinets. REMINGTON RAND, Inc. Aug. 8, 1947, No. 21839. Convention date, Dec. 20, 1940. [Class 146 (i)]  In a card index filing cabinet having trays stored nearly upright and adapted to be drawn out from and swung into a horizontal position on the top of the cabinet, a resilient toggle action buffer member is provided at the bottom of the compartment in which the trays are housed to act as a cushioning and ejector unit. A plurality of trays 42 are housed in holders 18 formed.by a plate section 19 with a bottom wall 20 and lateral flanges 21 which have flanges 22 parallel to the plate 19 and inturned lip portions 23 to form guides for the rear ends of the trays 42. Each holder is completed as a compartment by the plate 19 of the next compartment, the rearmost being completed by a compartment 12 providing a space for the top cover 58 of the cabinet and for a card receptacle 16 and tray 17. The compartments are maintained in inclined position by angled bars 24 having projections 25 engaging in slots in the bottom wall 4 of the cabinet, the tops of the compartments being located by bifurcated fingers 53 on retaining bars 50 which engage a plate 19 and flange 22 of the next compartment. The cushioning and ejector mechanism comprises a toggle lever 31 and a link 32 both of U cross-section pivotally connected by pins 33, the link 32 being pivotally connected by a pin 29 to the sides 28 of a plate detachably secured to the bottom 20 of the tray holder. The lower end of lever 31 carries rollers 36 on a pin 35, the pins 29 and 35 being connected by a coil spring 37 normally holding the toggle in broken position but in stretched position the coil being counterbalanced by the weight of the tray, and the upper arm 38 of the lever 31 carries a roller 40 and a cushion pad 41 adjacent the roller. Each tray 42, which has a finger grip at the top, is provided at the bottom with an axle 45 which engages the guide 21, 22, 23 or, when the tray is raised to the top, the flanged retaining bar 50 and with rollers 46 on the axle engaging the plates 19 or the tops of the other trays. Two plates 82 to hold correspondence are pivotally mounted in slots in a holder 77 attached to the cover 58. The cover 58 can be locked at 10 over the retainer bars 50 and trays 42. Specification 438,926 is referred to.
Patent GB-688889-A (GB)
Title: Improvements in and relating to rotor laminations and in iron-cobalt alloys therefor
IPC: C22C19/07
Filed: 1951-09-18
Abstract: A magnetic alloy, which is capable of being cold worked and which may be used as rotor lamination material for hysteresis motors, has the following composition: Co 43.0-47.0 per cent; Ni 5.0-7.0 per cent; V 4.0-6.0 per cent; Fe, and impurities, the remainder.  The alloy may be heated at about 1000 DEG C for a time, then hot rolled to a thickness of about .1 inch.  The sheet is then annealed at about 1000 DEG C, water quenched and cold rolled to about 10 mils thickness. Rotor laminations are punched from the sheet and the desired magnetic qualities are obtained by heating for 15 minutes or more at about 600 DEG C.  The alloy is compared with one containing W 5.75 per cent, C 0.68 per cent, Cr 0.4 per cent, balance Fe.
Patent GB-598270-A (GB)
Title: Improvements in the heat treatment of stainless steel parts to produce a non-oxide bright finish thereon
IPC: C21D1/607
Filed: 1945-08-27
Abstract: Stainless steel articles are de-scaled and heat treated by immersing them in a bath kept at 1850-1950 DEG  F. and containing 80-90 per cent by weight of barium chloride, 4-7 per cent of potassium chloride, 2-5 per cent of barium fluoride and 4-10 per cent of calcium fluoride, maintaining them in the bath until they are heated to the temperature of the bath, transferring them to a metallic pot containing a bath kept at 600-900 DEG  F. and containing 30-65 per cent by weight of sodium hydroxide, 30-65 per cent of potassium hydroxide and 2-10 per cent of sodium cyanide, retaining the parts in the bath until they have acquired its temperature and then removing them from the bath and quenching. The second bath may be contained in a steel pot heated by an electrode furnace using electrodes made of chrome-iron containing 20-30 per cent of chromium or nickel-chrome containing 8-12 per cent of nickel.
Patent GB-482103-A (GB)
Title: Improvements in variable attenuators of electric signals
IPC: H03K17/74
Filed: 1937-08-09
Abstract: 482,103. Two-way transmission; automatic volume control. SIEMENS & HALSKE AKT.-GES. Aug. 9, 1937, No. 21934. Convention date, Aug. 7, 1936. [Class 40 (iv)] [Also in Group XL] Networks for use as echo - suppressors and embodying ' non-linear resistance are designed to give a variable attennation which, at one or both of its extreme limits, attains a value determined by linear resistances only. In a lattice network, dry-plate rectifiers D are in series in the lattice arms, and in shunt in the line arms, with linear resistances R. The linear resistances R have values intermediate between, and preferably equal to the geometric mean of, the extreme values of the resistances of the rectifiers. The rectifiers are so directed that when a sufficient bias of one polarity is applied at a, b, the attenuation is at a minimum and the path of the current is almost entirely through the rectifiers in the line arms, but when. the bias is reversed the attenuation reaches a maximum and is determined by the linear resistances R. the effect of the rectifiers becoming negligible. In a modification. Fig. 2 (not shown), the series arms of a tee section comprise linear resistances and rectifiers in parallel, while the shunt arm, to the ends of which the biassing potential is applied, comprises a rectifier and a linear resistance in series. In a further modification an H-section maw be used. Reactances mav be introduced to make the attenuation depend on frequency. Each rectifier may be individually biassed to its optimum working potential.
Patent GB-1434301-A (GB)
Title: Dry-wall screw fastener
IPC: F16B25/00
Filed: 1973-05-08
Abstract: 1434301 Self drilling and tapping screws J B WAGNER 8 May 1973 [11 Aug 1972] 21964/73 Headings B3C and B3N [Also in Division F2] A screw for attaching a plaster board to a metal frame includes a head portion 11 having an annular scavenging surface 12 which is intended to collect and press into an aperture formed by the screw the ragged edges which occur at the entry portion of the aperture. Various modifications of head portion are described, the surface 12 always extending a distance 18 which is 40-70% of the distance 19. The surface 12 may be wholly in a plane perpendicular to the screw axis 17, may incorporate a recess formed of curved surfaces (Figs. 9 and 10, not shown), surfaces which are straight in cross-section (Fig. 13, not shown) or by a combination of straight and curved (Fig. 11, not shown). The periphery of surface 12 defines an edge 14 from which, in crosssection, the surface to the head periphery 22 is smooth and continuous and may be curved as shown, may extend axially before either smoothly curving to the periphery (Fig. 7, not shown) or linearly meeting the periphery (Fig. 12, not shown). This surface forms an angle or mean angle of 25-60 degrees with a plane normal to the longitudinal axis 17 of the screw. The threaded shank 7 is provided with a drill point 8, and the head portion 11 is provided with a tool receiving cavity 26 which is wholly within the portion 11.
Patent GB-843200-A (GB)
Title: Improvements relating to the manufacture of finned tubing
Inventor: ROSS BENNETT
IPC: B23K9/032
Filed: 1957-07-11
Abstract: 843,200. Making helically finned tubes; welding by fusion. RICHARDS & ROSS Ltd. July 10, 1958 [July 11, 1957], No. 21977/58. Classes 83 (2) and 83 (4). A method of making helically finned tubes comprises rotating an internally cooled core tube about its axis, feeding metal strip thereto to be wound therearound by rotation of the tube and welding the strip continuously to the tube by an inert gas shielded arc welding torch. A core tube 10 is rotated by a chuck 11 of a lathe, being supported at its other end by a hollow centre 12 on the tail stock. Cooling fluid is circulated through a pipe 14, the centre 12, a pipe 15 extending axially within the tube 10, and a pipe 16. Metal strip 17, after its free end has been tack welded or clamped to the tube 10, is guided to the tube by a grooved roller 21 on a slide 22 adjustable on a saddle 19 moved axially of the tube, e.g. by a lead screw. An arc welding torch 18 is carried by a mounting 25 angularly and linearly adjustable in two directions at right angles on the saddle 19. The strip 17 is fed under the tube 10 and the welding point may be in the horizontal plane of the tube axis or slightly above. Welding wire electrode is fed to the torch 18 through a cable 26 carrying the welding current, and carbon dioxide, argon or helium arc shielding gas is supplied through a hose 27. An earthed current return cable 24 is connected to the slide 22, which also carries a scraper, Fig. 2 (not shown) to remove weld spatter from the tube. The tube 10 may be vertical or inclined. The strip feed and welding torch may be stationary and the tube 10 rotated and moved axially.
Patent GB-242035-A (GB)
Title: Improvements in or relating to telephone receivers
IPC: H04R13/02
Filed: 1924-09-18
Abstract: 242,035. Buckley, C. A. M., and Buckley, H. S. Sept. 18, 1924. Magnetic instruments ; head sets.-The magnet of a telephone is formed with spring-like polepieces adapted to be adjusted in relation to the diaphragm by a screw device operable from the back of the casing. As shown, the fixed part of the magnet a is semi-circular in shape and the two spring pole-pieces d extend radially inwards. Both pole-pieces are engaged by the head of a T-shaped bolt i extending through a boss l on the back of the casnig and operated by a nut j. The boss mav be formed with a slot p, adapted to receive the flattened end of the stem s of a head band z, the stem having lateral pins t engaging grooves in the sides of the slot p. The nut j closes the end of the slot p and retains the stem. The upper end of the stem passes through a stud u on the head band and also through a cap v placed over the stud and pressed outwards to grip the stem s by a resilient washer w.
Patent GB-506974-A (GB)
Title: Improvements in the manufacture of tubes or pipes from mixtures of fibre and cement
IPC: B28B21/48
Filed: 1938-07-25
Abstract: 506,974. Making fibrous-cement pipes. SOC. ANON. STABILIMENTI DI DALMINE. July 25, 1938, No. 22077. Convention date, July 30, 1937. [Class 99 (ii)] In a machine for making pipes from a mixture of fibre and cement by transferring the mixture from a felt or felts to axially-moving rotating mandrels, each mandrel has at each end a coupling member 1 or 2 provided respectively with male and female threads 3, 4 so that two mandrels can be connected end to end or disconnected while one of them is rotating in the machine. The mandrels are locked in the coupled position by a spring-pressed ring 5 slidable, but not rotatable, in the coupling- member l, and carrying ratchet teeth 7 which engage ratchet teeth 6 on the coupling-member 2 when the couplings are screwed together. The mandrels can only be released by sliding the ring 5 away from the coupling-member 2, either by supplying compressed air to a space 20 within the ring, or by a hand-operated rod passing through the mandrel. A packing- ring 8 is provided between the mandrels to make the joint airtight. Specification 391,909 is referred to.